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Altair

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Al⋅tair

  [al-tair, -tahyuhr, al-tair, -tahyuhr]
–noun
a first-magnitude star in the constellation Aquila.
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Origin:
< Ar (al-nasr) al-ṭā'ir (the) flying (eagle)
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2010.
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Al·tair   (āl-tīr', -târ', āl'tīr', -târ')   
n.  A very bright, variable double star in the constellation Aquila, approximately 15.7 light-years from Earth.

[Arabic (an-nasr) aṭ-ṭā'ir, the flying (eagle) : al-, the + ṭā'ir, flying, active participle of ṭāra, to fly; see ṭyr in Semitic roots.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

Altair 
bright star in the constellation Aquila, 16c., from Arabic Al Nasr al Tair "the Flying Eagle," from tair, part. of tara "it flew."
Online Etymology Dictionary, © 2001 Douglas Harper
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Science Dictionary
Altair   (āl-târ', -tīr')  Pronunciation Key 
A bright white star in the constellation Aquila. Altair is a main-sequence star in the Hertzprung-Russell diagram. It is the 12th brightest star in the night sky, with an apparent magnitude of 0.77. Altair, along with Vega and Deneb, form the Summer Triangle asterism. Scientific name: Alpha Aquilae.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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